If Samsung were to add an S pen silo or have it attached on the back of next Z Fold, I would seriously consider trading my S22 Ultra in for it. With that said. I'm not completely sold on the concept of foldable phones as all-in-one devices though. Whether it's a Samsung or OnePlus foldable display or a dual display clamshell like the Surface Duo series. If I need to work on something, I either use my Laptop/Desktop, or use my Tab S9. I can access my work AVD instance from any of my devices. But, in my opinion, anything with a display under 11 inches is not very practical to work on.
I do travel for work on a fairly regular basis. Having to carry a 15 inch laptop, a 12 inch tablet, and my S22 Ultra is not that big of a deal. Especially when compared to the amount of stuff I had to carry on a regular basis when I was younger.